Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 25mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U
Generating 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation tasks. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb stroke-end impact, while the compact riveted body keeps weight down.
For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a 2:1 safety margin. The U suffix denotes a 90-degree rear cover for orthogonal port or pivot orientation. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U Is Used
Short-Stroke Clamping
Ideal for locking medium-sized aluminium extrusions or composite panels in CNC machining fixtures, utilizing its 245.3 N thrust within a tight 25 mm travel.
Package Diverting
Deploys a 90-degree routing flap on a packaging line to push medium-weight cartons, benefiting from the 90-degree U cover for perpendicular mounting.
Washdown Gate Actuation
Operates a small access hatch in a food processing line where the stainless-steel barrel and rod prevent mild corrosion from frequent cleaning.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U the Right Cylinder?
When sizing this 25 mm bore, compare it against its neighbours: a 20 mm bore yields 157.0 N push at 0.5 MPa, while stepping up to a 32 mm bore provides 402.2 N. This model fits neatly in the middle for medium-force duties. The short 25 mm stroke minimizes rod-bending side-load risks, making it highly stable for compact clamping.
If your application requires the piston to stay put after a valve centres or air pressure drops, this cylinder will drift; the TPU bumpers only decelerate the end of travel and act as neither a brake nor a lock. You must add an external rod lock or a pilot-operated check valve to hold a suspended load. Furthermore, since this unit has no internal magnet, adding a sensor requires switching to the -S variant.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X25U FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it yields 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M10x1.25.
Yes, the Ø25 mm bore uses the ISO 6432 mini-cylinder mounting interface, so it drops into standard clevises and brackets. However, because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG switches without upgrading to the magnet-equipped version.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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